Question

plzz tell what is the difference when kcl kvl is applied to ac circuit

Answer 1

we use kvl if we have a series circuit that forms a closed loop... and use kcl if we have a parallel circuits where we have a node, currents entering a node equals currents leaving that same node...

Answer 2

if we have a series circuit, better to work with impedance...
if we have a parallel circuit, better to work with admittance...
admittance is reciprocal of impedance...